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This document summarizes some of the results of the OHI 2016 global assessment.

Scores are broken down as follows: 1. Description of reference datasets and figures * Complete datasets (developed for website) * Figures that provide an overview of scores 2. The global picture * Average global goal and index scores across years 3. A closer look at the regions * Regional goal and index scores for 2016 4. Change over time: five year trends in scores 5. Comparison of assessment years (what’s changed do due to changes to models and/or data sources) 6. A closer look at goals

Description of reference datasets and figures

These datasets and figures include the complete data for the OHI 2016 assessment.

Complete datasets (compiled for website)

Data files to generate content for http://www.oceanhealthindex.org/.

Output files:

Some details about the files:

  • File includes the EEZ (updated in 2012-2016), Antarctica (most recently calculated in 2015), and High Seas (most recently calculated in 2014) data. However, years 2012 and 2013 do not have Antarctica or High Seas data. And, the same High Seas and Antarctica data are used for years 2014, 2015, and 2016.

  • Region 0 is the global average scores, which are calculated using an area-weighted average of the scores (status, likely future state, and score dimensions) for EEZ, Antarctica, and High Seas regions.

  • Region 300 is the eez average scores, which are calculated using an area-weighted average of the scores (status, likely future state, and score dimensions) for the EEZ regions.

Figures that provide an overview of scores

This carpet plot figure (available as high resolution png provides a full overview of the scores from 2016 assessment.

Another resource that can be useful for examining scores is this interactive plot. These plots can be used to (some example screen shots):

explore the distribution of scores

compare different goal scores

observe change over time

More figure resources

  • The location of maps describing goal and index scores are located here
  • Flower plots are located here

The global picture

This section describes global patterns in index and goal scores. If you are more interested in what is happening at the region scale, skip to the next section.

Average global goal and index scores across years

(NOTE: Livelihood and economy goals are not included here)

Overall, there weren’t dramatic changes across years.

The Index score for 2016 (eez area weighted average of region scores) was: 71. This value was essentially constant from 2012 to 2016.

I haven’t done a formal analysis, but it looks like over time:

  • Clean water scores may be slightly decreasing
  • Lasting special places may be slightly increasing
  • Natural products decreases rather dramatically
goal 2012 2013 2014 2015 2016
Index 70.9 71.3 70.9 70.9 70.5
Artisanal opportunities 76.6 76.9 77.2 77.2 77.2
Species condition (subgoal) 91.1 91.1 91.1 91.2 91.2
Biodiversity 90.8 90.8 90.8 90.9 90.9
Habitat (subgoal) 90.4 90.5 90.5 90.5 90.6
Coastal protection 87.8 87.7 87.7 87.6 87.3
Carbon storage 79.2 79.2 79.2 79.2 79.3
Clean water 74.2 73.7 73.6 73.5 73.5
Fisheries (subgoal) 53.2 53.5 53.5 52.9 53.4
Food provisioning 53.3 53.6 53.7 52.9 53.2
Mariculture (subgoal) 30.1 32.8 33.7 32.8 31.9
Iconic species (subgoal) 65.2 66.4 66.4 66.8 65.5
Sense of place 60.1 61.5 61.7 62.3 61.6
Lasting special places (subgoal) 56.1 57.7 57.8 58.5 58.4
Natural products 59.0 58.0 56.5 53.2 48.0
Tourism & recreation 49.9 48.7 45.3 48.1 49.2

A closer look at the regions

This section explores goal and index scores at the region level. I mostly focus on the 2016 scores.

Regional goal and index scores for 2016

This interactive table describes the index and goal scores for the regions in 2016 (and a link to a color coded table, and a csv file can also be downloaded).

Distribution of scores

The median index score was 68. The highest score was 91 for Howland Island and Baker Island, and the lowest score was 44 for Sierra Leone.

The following histogram describes the distribution of overall index scores:

The regions with index scores of 80 or greater are:

country Index
Howland Island and Baker Island 91
Jarvis Island 89
South Georgia and the South Sandwich Islands 88
Christmas Island 85
Seychelles 85
Palmyra Atoll 85
Phoenix Islands (Kiribati) 85
Macquarie Island 84
Northern Saint-Martin 84
Cocos Islands 83
Glorioso Islands 83
Germany 83
New Caledonia 82
Prince Edward Islands 82
Crozet Islands 82
Kerguelen Islands 82
Heard and McDonald Islands 82
Norfolk Island 81
Antigua and Barbuda 81
American Samoa 81
Aruba 81
Australia 80

The regions with index scores of 50 or less are:

country Index
Eritrea 50
Senegal 50
Lebanon 50
Algeria 50
Republique du Congo 49
Guinea Bissau 49
Liberia 48
Nicaragua 47
Democratic Republic of the Congo 47
Guinea 45
Ivory Coast 45
Libya 44
Sierra Leone 44

Map of index scores

Map png files can be downloaded here.

(Maps of goal scores will be presented later)

Comparing assessment years

The following is a comparison of the global status scores generated for 2015 by this year’s assessment vs. last year’s assessment.

If the models and source data remains the same, these scores should be exactly the same. Differences indicate changes in methods or source data (described here).

These changes do not reflect changes in actual system health!

Global averages

The following goals had the largest changes:

  • Artisanal opportunity (biggest change: +11 points): Reference point of need layer adjusted to avoid scores being driven by outliers
  • Species condition/biodiversity (+8 points): Addition of bird species tended to increase status scores
  • Mariculture (+6 points): Changes to source data
  • Fisheries (-4 points): Decrease is due primarily to increase in number of stocks classified as “unidentified” in source data

The rest of the goals/subgoals changed by less than 3 points.

goal assess2015 assess2016 change
Artisanal opportunities 62.92 73.53 10.61
Species condition (subgoal) 85.18 92.78 7.60
Biodiversity 86.52 90.35 3.83
Habitat (subgoal) 87.90 87.91 0.01
Coastal protection 85.64 85.53 -0.11
Carbon storage 78.42 78.42 0.00
Clean water 73.47 73.47 0.00
Economies 87.65 87.65 0.00
Livelihoods & economies 82.46 82.46 0.00
Livelihoods 77.28 77.28 0.00
Fisheries (subgoal) 54.91 50.48 -4.43
Food provisioning 54.25 50.50 -3.75
Mariculture (subgoal) 25.44 31.53 6.09
Iconic species (subgoal) 59.27 62.11 2.84
Sense of place 58.66 58.93 0.27
Lasting special places (subgoal) 58.54 56.41 -2.13
Natural products 48.71 50.91 2.20
Tourism & recreation 48.29 46.98 -1.31

Regional data

Comparing assessment years: regional scores

This colorcoded dataset compares the 2015 index scores generated for each region and goal between this year’s and last year’s assessment.

Although a goal may have had little average change, some regions may have very different scores.

Because these are index scores, changes reflect updates to pressure and resilience scores as well as status.

The following plot provides an overview of how the 2015 scores changed between the 2015 and 2016 assessment.

Some general pattern in these data: * Fisheries/Food provisioning: Lots of changes all over the place due to changes in source data * Artisanal opportunity: consistently increased for most regions due to change in reference point

A closer look at goals

This section takes a closer look at each goal/subgoal. I do not include goals that are comprised of multiple subgoals, although the subgoals are described.

Artisanal opportunities

Scores

Top 10 performers

country score
Cayman Islands 100
United Arab Emirates 100
Qatar 100
Bermuda 100
United States 100
Kuwait 100
Norway 100
Ireland 100
Saudi Arabia 100
Brunei 100

Bottom 10 performers

country score
211 Ivory Coast 46
212 Solomon Islands 45
213 Cameroon 45
214 Mozambique 44
215 Comoro Islands 44
216 Madagascar 44
217 Benin 44
218 Togo 43
219 Guinea 43
220 Liberia 42

Species condition

Scores

Top 10 performers

country score
Northern Saint-Martin 98
Aruba 98
Curacao 98
Cayman Islands 98
Ascension 98
Bahamas 98
Saba 98
Montserrat 98
Bonaire 98
Turks and Caicos Islands 98

Bottom 10 performers

country score
211 Vietnam 82
212 Singapore 82
213 Eritrea 82
214 Cambodia 81
215 Oecussi Ambeno 81
216 East Timor 81
217 Libya 81
218 Myanmar 80
219 Sudan 80
220 Iraq 78

Habitat

Scores

Top 10 performers

country score
Macquarie Island 100
Kerguelen Islands 100
Heard and McDonald Islands 100
Norfolk Island 100
Tuvalu 100
Pitcairn 100
Wallis and Futuna 100
British Indian Ocean Territory 100
Suriname 100
Russia 100

Bottom 10 performers

Coastal protection

Scores

Top 10 performers

country score
Howland Island and Baker Island 100
Phoenix Islands (Kiribati) 100
Aruba 100
Curacao 100
Tuvalu 100
Pitcairn 100
French Polynesia 100
Wallis and Futuna 100
Netherlands 100
British Indian Ocean Territory 100

Bottom 10 performers

country score
211 Albania NA
212 Sao Tome and Principe NA
213 Montenegro NA
214 Turkey NA
215 Syria NA
216 Bosnia and Herzegovina NA
217 Lebanon NA
218 Algeria NA
219 Republique du Congo NA
220 Libya NA

Carbon storage

Scores

Top 10 performers

country score
Seychelles 100
Northern Saint-Martin 100
Germany 100
Antigua and Barbuda 100
Aruba 100
Netherlands 100
Bahamas 100
Suriname 100
South Africa 100
Russia 100

Bottom 10 performers

country score
211 Sao Tome and Principe NA
212 Montenegro NA
213 Turkey NA
214 Syria NA
215 Bosnia and Herzegovina NA
216 North Korea NA
217 Lebanon NA
218 Algeria NA
219 Republique du Congo NA
220 Libya NA

Clean waters

Scores

Top 10 performers

country score
Heard and McDonald Islands 100
South Georgia and the South Sandwich Islands 99
Kerguelen Islands 99
Falkland Islands 99
Bouvet Island 99
Jarvis Island 98
Macquarie Island 98
Howland Island and Baker Island 97
Phoenix Islands (Kiribati) 97
Crozet Islands 97

Bottom 10 performers

country score
211 Israel 33
212 Guatemala 33
213 Belgium 32
214 India 29
215 Benin 29
216 Lebanon 29
217 Slovenia 28
218 Togo 28
219 Monaco 24
220 Gibraltar 20

Fisheries

Scores

Top 10 performers

country score
Tuvalu 96
Nauru 96
Palau 95
Mayotte 91
Oecussi Ambeno 91
Phoenix Islands (Kiribati) 90
Finland 90
Maldives 89
Seychelles 88
Solomon Islands 88

Bottom 10 performers

country score
211 El Salvador 19
212 Amsterdam Island and Saint Paul Island 18
213 Mauritania 17
214 Barbados 17
215 Western Sahara 16
216 Guinea 16
217 Wake Island 12
218 Turks and Caicos Islands 9
219 Jan Mayen 6
220 Bouvet Island 3

Mariculture

Scores

Top 10 performers

country score
Russia 100
Ecuador 100
New Zealand 100
Norway 100
Chile 100
China 100
Faeroe Islands 100
Iceland 99
Belize 94
Canada 72

Bottom 10 performers

country score
211 Sudan NA
212 Somalia NA
213 Dominica NA
214 Republique du Congo NA
215 Guinea Bissau NA
216 Liberia NA
217 Democratic Republic of the Congo NA
218 Guinea NA
219 Ivory Coast NA
220 Sierra Leone NA

Iconic species

Scores

Top 10 performers

country score
Cayman Islands 100
United Arab Emirates 100
Qatar 100
Bermuda 100
United States 100
Kuwait 100
Norway 100
Ireland 100
Saudi Arabia 100
Brunei 100

Bottom 10 performers

country score
211 Ivory Coast 46
212 Solomon Islands 45
213 Cameroon 45
214 Mozambique 44
215 Comoro Islands 44
216 Madagascar 44
217 Benin 44
218 Togo 43
219 Guinea 43
220 Liberia 42

Lasting special places

Scores

Top 10 performers

country score
Howland Island and Baker Island 100
Jarvis Island 100
South Georgia and the South Sandwich Islands 100
Palmyra Atoll 100
Phoenix Islands (Kiribati) 100
Macquarie Island 100
Northern Saint-Martin 100
Glorioso Islands 100
Germany 100
Prince Edward Islands 100

Bottom 10 performers

country score
211 Bouvet Island 0
212 Benin 0
213 Iraq 0
214 Syria 0
215 Sudan 0
216 Somalia 0
217 North Korea 0
218 Eritrea 0
219 Liberia 0
220 Libya 0

Natural products

Scores

Top 10 performers

country score
New Caledonia 100
Suriname 100
Mozambique 100
India 99
Iran 98
French Polynesia 97
Trinidad and Tobago 97
Germany 96
Italy 96
Latvia 96

Bottom 10 performers

country score
211 Guernsey NA
212 Benin NA
213 Iraq NA
214 Bosnia and Herzegovina NA
215 Guinea Bissau NA
216 Liberia NA
217 Democratic Republic of the Congo NA
218 Guinea NA
219 Ivory Coast NA
220 Sierra Leone NA

Tourism and recreation

Scores

Top 10 performers

country score
Seychelles 100
Northern Saint-Martin 100
Antigua and Barbuda 100
Aruba 100
Malta 100
Curacao 100
Vanuatu 100
Maldives 100
Bahamas 100
Saba 100

Bottom 10 performers

country score
211 Crozet Islands NA
212 Kerguelen Islands NA
213 Heard and McDonald Islands NA
214 Ile Europa NA
215 Amsterdam Island and Saint Paul Island NA
216 Johnston Atoll NA
217 Clipperton Island NA
218 Bassas da India NA
219 Ile Tromelin NA
220 Bouvet Island NA